corroborate
v.v. to support a story or fact with evidence. You use this when you want to show that something is true by providing more proof.
v. to provide evidence or testimony that supports a claim or statement. Transitive — requires a direct object.
The witness's testimony corroborates the suspect's story.
The forensic evidence found at the scene corroborates the victim's account of the events.
While the initial report suggested a minor accident, the subsequent investigation by the insurance company corroborates a more serious structural failure.
First attested in the 1530s; borrowed from Latin corrōborātus (“strengthened”), perfect passive participle of corrōborō (“to support, corroborate”) (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from con- (“together”) + rōborō (“to strengthen”), from rōbur, rōboris (“strength”). Regular participial usage of the adjective up until Early Modern English, otherwise archaic.